My watch is running too fast or too slow. What is normal?
If your MODERN MECHANICAL watch is loosing more than a few seconds a day (2-3), or gaining more than ten (10) seconds per day, it may be time for service. If you QUARTZ watch is loosing or gaining more than 15 seconds per month, it may require servicing. This is also known as an “overhaul” or “basic/complete service,” and should include, at a minimum, a full disassembly and ultrasonic cleaning of the watch movement, in an automatic ultrasonic or infrasonic cleaning machine which utilizes NO HEAT during the cleaing and rinsing cycles, AND AGITATION during the cleaning and rinsing cycles. Very few machines are capable of this, and those that do tend to be very expensive to own and operate, with only the BEST repair shops possessing them.
